Yanmar 2TNV70 Operation Manual

Also see for 2TNV70: Service manual Service manual Service manual

Contents

Yanmar 2TNV70 Operation Manual Manual pdf 39 page image

PRODUCT OVERVIEWTNV Operation Manual 21FUNCTION OF MAJOR ENGINE COMPONENTSComponents FunctionsAir Cleaner The air cleaner prevents airborne contaminants from entering theengine. Since the air cleaner is application specific, it must becarefully selected by an application engineer. It is not part of thebasic engine package as shipped from the Yanmar factory. Periodicreplacement of the air cleaner filter element is necessary. See thePeriodic Maintenance Schedule on page 73 for the replacementfrequency.Alternator The alternator is driven by a V-belt which is powered by thecrankshaft V-pulley. The alternator supplies electricity to the enginesystems and charges the battery while the engine is running.Dipstick (Engine Oil) The engine oil dipstick is used to determine the amount of engineoil in the crankcase.Electric Fuel Pump The electric fuel pump makes sure there is a constant supply ofdiesel fuel to the fuel injection pump. The electric fuel pump iselectro-magnetic and runs on 12 VDC. An electric fuel pump maybe installed as an option or as standard equipment. Standardequipment may vary based on engine model and specification. If anelectric fuel pump is installed, turn the key switch to the ON positionfor 10 to 15 seconds to prime the fuel system.Engine Oil Filter The engine oil filter removes contaminants and sediments from theengine oil. Periodic replacement of the engine oil filter is necessary.See the Periodic Maintenance Schedule on page 73 for thereplacement frequency.Engine Oil Cooler(If Equipped)The engine oil cooler helps to keep the engine oil cool. Enginecoolant from the cooling system is circulated through an adapter atthe base of the engine oil filter assembly and then returned to thecylinder block.Fuel Filter The fuel filter removes contaminants and sediments from the dieselfuel. Periodic replacement of the fuel filter is necessary. See thePeriodic Maintenance Schedule on page 73 for the replacementfrequency. Please note that the word “diesel” is impliedthroughout this manual when the word “fuel” is used.Fuel Filter / Water Separator The fuel filter / water separator removes contaminants, sedimentsand water from diesel fuel going to the fuel filter. This is a requiredcomponent of the fuel system. This is standard equipment withevery engine. The separator is installed between the fuel tank andthe fuel pump. Periodically drain the water from the fuel filter / waterseparator using the drain cock at the bottom of the separator.